Page 127 - NUMINO_WB_4B

152-B1-1

The Perimeter of a Rectangle and Square
1. Find the perimeter of each figure.

Rectangle Square
w
l s

w ss

l s
Since opposite sides of a rectangle are Since all four sides of a square
equal, the perimeter equals 2 times the are equal, the perimeter is 4 times
length (l) plus 2 times the width (w). the length of a side.

P lwlw Ps s s s
P2 l2 w P4 s

a. 8 m b. 5 cm

4m 4 m 5 cm 5 cm

8m 5 cm
Pm P cm
c. 7 ft d. 2 yd

7 ft 7 ft 7 yd 7 yd

7 ft 2 yd
P ft P yd